Grease-cup.



E. C. ANDERSON.

GREASE CUP.

Patented Apr. 8, 1919.

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GREASE CUP.

APPLICATION FILED [58.16. 1918.

1,300,099. Patented Apr. 8,1919.

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mmss CUP.

APPLICATION FILED FEB. Hi. I918.

Patented Apr. 8, 1919.

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EMIL C. ANDERSON, OF DENVER, COLORADO.

GBEASE- CUP.

Specification of Letters Patent.

Patented Apr. 8, 1919.

Application filed February 16 ,1918. Serial N 0. 217,660.

To all whom it may concern.

Be it known that I, EMIL O. ANDERSON, a citizen of the United States,residing in the city of Denver, county of Denver and ,State of Colorado,have invented certain new and useful Improvements in Grease- Cups, ofwhich the following is a description.

My invention belongs to that general class of devices employed forlubricating movable parts, such as rotating shafts, wrist pins, guideways, cross-heads and the like, and is particularly designed for useupon such parts where there is great vibration or movement of the partsfrequently tending to accidentally disengage them.

To this end my invention consists in the novel construction, arrangementand combnation of parts herein shown and described and more particularlypointed out in the claims.

In the drawings, wherein like reference characters indicate like orcorresponding parts,

Figure 1 is a central sectional vlew of a grease cup of my improveddesign, in which the cooperating part or follower is partly shown insection and partly in full lines;

Fig. 2 is a similar view showing the sectional follower in its lockedposition;

Fig. 3 is a longitudinal sectional view through the follower and aportion of the grease. cup;

Fig. 4 1s a transverse section on line H of Fig. 3;

Fig. 5 is a modification of the construction shown in the preceding fiures;

Fig. dis a top plan view of t e same;

Fig. 7 is an elevation of a ortion of the follower of the constructionsimilar to that shown in Fig. 5;

Fig. 8 is an enlarged fragmentary view showing the operation when theparts are locked;

Figs. 9 and 10 illustrate a modlfied form;

Fig. 11 is a central section showing a construction somewhat similar tothe forms shown in Figs. 1 to 4; and

Figs. 12, 13, 14 and 15 illustrate another modification.

In the drawings, 1 is a grease cup of well known form provided with adependin stem 2 or equivalent part by means of whic it may be secured inposition. The cup is provided with the channel 3 through which thegrease may be conducted to the part to be lubricated. The grease cup, asshown, is internally threaded for the rece tion of a follower orcooperating part 0 peculiar construction. It has been found that when afollower consistsof a single part screwed into the cup, the vibration ofthe part carrying the cup frequently causes the follower to back off andfinally become accidentally disengaged, not only allowing the escape ofthe grease or lubricant by reason of the movement of the part, but also,as in the case of the wrist pin of locomotives, permitting the entranceof gravel, sand and dust which obviously would be carried directly tothe part being lubricated and cause serious damage and injury.

In my improved form the follower is composed of a plurality ofregistering members super-imposed one upon the other, externallythreaded to engage the threads of the cup, and with the ap roximatefaces of said members cam faced: so that as one, for illustration theouter one, is backed off to disengage the parts, the cam faces of thetwo parts will codperate serving to press the two parts so apart thatthe follower will firmly lock on the threads of the grease cup andeffectually prevent an accidental disengagement therefrom.

As shown in Figs. 1 to 4 inclusive the follower is composed ofsuper-imposed members 4 and 5 cam faced as indicated at 6 and 7, with anabutting shoulder 8 on each. The upper part 5 is provided with anextension or sleeve 9 formed with a central longitudinal, aperture 10,(shown in dotted lines in Fig. 1,.and full lines in Fig. 3). A bar or.

rod 11 loosely and rotatably extends through said sleeve 9 and issecurely fixed to the lower part 4. of the follower. The bar 11 ispreferably provided with a suitable head 12 of a form to receive awrench or other tool.

Thus it may be square or of any of the usual forms for that purpose. Thesleeve 9 in the preferred construction is also formed to receive awrench, preferably of a form that will not register with the top 12. Asshown, the part 12 is squared, while the part 9 is hexagonal and oflarger size. In the preferred form the parts are so assembled that'whenthe two parts 4 and 5 are in a position that theshoulders 8 of the twoparts are in contact as in Figs. 1 and 3 there will be a slightclearance between the head 12 and the sleeve 9 as at 13, permittingsufiicient movement to secure the locking effect. The construction ofthe follower as described is clearly shown in Fig. 3 and the operationclearly illustrated in Fig. 2. Thus after the grease cup is pro Jerlycharged, the follower may be readi y threaded with the cup. Theshoulders 8 being in contact the follower may be threaded down into thegrease cup as far as may be desired, being capable of handling as anintegral or unitary part. When the follower has been inserted to thedesired point a wrench is then placed upon the head 12, and upon turningit to the right in the usual manner, the part 4 will be further screweddownward independently of the part 5 a distance that will cause theshoulder 8 on the part 4 to separate from the shoulder 8 on the part 5as ind cated, thus separating the parts 4 and 5 a distance regulated bythe cam faces, and firmly looking the follower on the grease cup. Whilein this position the vibration of the parts has a tendency to morefirmly lock them together. The follower can not be backed off by placinga wrench upon the sleeve 9 as any effort to back the sleeve off willsimply look the parts tighter in position. The only manner In which theparts can be backed off will be by placing a wrench either upon the part12 or the sleeve 9 and rotating the respective part to bring thetwoshoulders 8 again in contact. When this occurs a wrench placed upon thesleeve 9 will serve to screw the follower down again as a unitary part,when it will again be locked in position as before. On the other hand,the entire follower may be backed off and disengaged by en aging thewrench with the part 12.

This form of construction is capable of a number of modifications. Asshown in Fig. 5, the construction is substantially the same with theexception that the cup here is illustrated as bein provided with afollower particularly adapted for use upon a cup where the grease iswarmed into a substantially fluid state by the friction, or a grease ina more fluid or semi-fluid state is used which may not necessitate thepressure of a follower to feed it to the lubricated part. As here shown,the grease cup 1 is provided with a follower comprising a plurality ofparts 14:15 with the shoulders 8 as described. The sleeve here isshortened as at 16 and provided with a cap 17 adapted to be screwed downfirmly and snugly upon the cup 1. The top 18 is rovided with a barextending longitudinal y through the parts 15, 16 and 17 with its lowerend firmly secured to the part 14 as before described. In assembling,the parts are rotated until the shoulders 8 are in contact, when thefollower may be screwed down into the grease cup until the ca 17 isfirmly seated on the upper margin 0 the cup. A wrench is then placedupon the part 18 and it 13 rotated the distance allowed by the cam facesof the parts 14 and 15, firmly locklng the follower in position withinthe cup as before described. As clearly shown in Fig. 7, where aslightly modified form is illustrated, a clearance is provided betweenthe head 18 and the top of the part 16, as at 19, and as before stated,this clearance is sufiicient to permit the locking of the members of thefollower with the cup as described.

Fig. 8 illustrates the locking effect caused by rotating the parts upontheir cam faces. The parts are enlarged to clearly illustrate thelocking effect in which the threads of the part 14 are forced downwardfirmly and in frictional contact with the upper edges of the thread onthe cup, while at the same time the upper margins of the thread on thepart 15 are forced upward firmly in frictional contact with the lowermargins of the thread on that part of the cup.

Figs. 9 and 10 illustrate another form of follower in which theoperation is substantially the same. As here shown, the sections 20 and21 are provided with cam faces as before described, a bar 22 firmlysecured to the part 20 extends to the upper face of the part 21 and isthere headed to overlie the same to prevent the accidental disengagementof the parts. The bar 22 loosely rotates in the part 21 and the upperface of the part 21 is'provided With a groove 23 for the reception of aspanner or tool of that character, while the upper end of the bar 22 isprovided with a cooperating groove 24-, which as the bar is rotated mayregister with the groove 23 for the insertion of a tool. similar to thescrew driver, when the follower may be inserted as a whole as before decribed. When it has reached the desired point, the parts ma be locked ineither one or two ways. For il ustration the screw driver may beinserted in the groove 24 of the bar 22 and upon turning the same to theright the part 20 will be rotated Within the cup separating the parts 20and 21 as before set forth, the cooperating cam faces forcing thethreads in frictional engagement with the approximate parts as beforedescribed. (in the other hand, if preferred a spanner may be placed inthe groove 23 of the upper part 2] and this part may be backed partlyout, serving the same purpose and effectuzfilly locking the follower inposition as beore.

In the form shown in Fig. 11 the construction is substantially the sameas that shown in Figs. 5, 6 and 7 with the exception that the entirefollower may be turned downward as in the construction shown in Figs. 1to 4 and 9 and 10 until the grease is substantially exhausted from thecup. In other words, the

head 25 is connected by a rod with the lower section loosely passingthrough the art 27. There is no collar or cap correspon ing to the part17 in Figs. 6 and 7, and the entire follower can be screwed down byplacin a wrench upon the part 28 and can be lo cke in position in eitherof the ways described in connection with the form shown in Figs. 9 and10, that is, either by turning the head :25 to the right and forcing thepart 26 downward, or by placing a wrench upon the part 28 and partiallybacking the part 27 off.

In the form shown in Figs. 12, 13, 14 and 1.3, the lower part 29 of thefollower has formed therein a square or equivalent shaped opening 30 forthe reception of the end of the tool. This opening does not extendentirely through the part 29 but only a sufficient distance to form aproper engagement for the end of the cooperating tool. The part 31 has asimilarly formed opening extending entirely through it and registeringwith the part 30. It will readily be seen that by passing the toolthrough the part 31 until it is in engagement with the part 30 as shownin full lines in Fig. 13, the two parts will register and may be screweddown into the cup together as before described, while upon retractin thetool 32 as shown in dotted lines in F 1g. 13 or full lines in Fig. 15,the upper section 31 of the follower may be partially backed off,serving to effectually lock the follower in the cup as before described.This will bring the open-- ing through the part 31 and the depression 30out of alinement with each other. In order to remove the follower itwill be necessary to place the tool again in the opening 111 the part 31and turn the same until the openings in the two parts are again inregistry with each other, and the tool may then he slipped down into theopening 30 and the entire follower backed off in the usual manner.

As shown in Fig. 14, the construction is substantially the same with thedifference that there is a section of the threaded portion on thefollower, partly on the upper section thereof as at 33 cut away. Thispart not being threaded, but the threads on the balance of the memberbeing cut to cooper ate with the thread in the cup and to operatesynchronously with the lower section of the follower. The operation issubstantially the same. The advantages of this form consist in the factthat the lower section of the follower may be screwed down into the samea little distance below the uppe margin of the cup when the uppersection may be loosely dropped thereon, and when the shoulders of thecam parts come in contact, the entire follower may be screwed down toposition as a unit.

In practical operation and with severe use it has been found that myconstruction is thoroughly effective for the purposes described, andthat it is an important element of safety in devices of this character.

Having thus described my invention, what I desire to secure by LettersPatent is 1. A device of the kind described comprising an internallyscrew threaded main carrying part, in combination with an externallythreaded cooperating part compris ing a plurality of registering memberssuper-imposed one on the other with cam faced approximate faces, andmeans for rotating one of said members independently of the other or inunison therewith substantially as described.

2. A device of the kind described, comprising an internally screwthreaded main carrying part, in combination with an externally threadedcooperating part comprising a plurality of registering memberssuper-imposed one on the other and provided with cam faced approximatefaces, one of said parts being provided with a projecting stem rigidlyfixed thereto rotatably extending through the other member and formed atits outer end to receive a tool for rotating the same.

3. A device of the kind described, comprising an internally screwthreaded main carrying part, in combination with an externally threadedcooperating part comprising a plurality of registering memberssuper-imposed one on the other and formed with cam faced approximatefaces, one of said members being provided with a projecting stem rigidlysecured thereto rotatably extending through the other member with itsfree end formed to receive a tool for rotating the same, the said stembeing of a length to permit slight longitudinal play of the same withinthe outer member.

4. A device of the kind described, comprising an internally screwthreaded main carrying part, in combination with an externally threadedcooperating part comprising a plurality of registering memberssuper-imposed one on the other with cam faced approximate faces, theouter member being provided with an extending sleeve formed for thecooperation of a tool to rotate the same and being longitudinally cored,and the other member provided with an extending stem rigidly securedthereto rotatably mounted in the sleeve member with its free end formedfor the reception of a tool to operate the same.

5. A device of the kind described, comprising an internally screwthreaded main carrying part, in combination with an externally threadedcooperating part comprising a plurality of registering memberssuperimposed one on the other with cam faced approximate faces, providedwith shoulders to limit the rotation of one on the other in onedirection only, the outer member formed with a. marginal extension nearits upper part adapted to form a cap for the carrying part, and anextension for the reception of a tool to rotate the same, the same beingcentrally channeled for the reception of a rotating stem, an innercooperating part provided with an extending stem rigidly securedthereto, rotatably positioned in the outer member with the free endformed for the reception of a tool, the said stem being allowed a slightlongitudinal movement allowing a rotation of one part in relation to theother greater than the distance between the threads of the carryingpart.

In testimony whereof, I have hereunto 15 signed my name in the presenceof two subscribing witnesses.

EMIL C. ANDERSON.

Witnesses:

S. J. ODAY, CHAS. L. SMELT.

Copies of this patent may be obtained or five cents each, by addressingthe Commissioner of ratents, Washington, D. 0."

